Buffing wheel



M. KANTER BUFFING WHEEL May 12, 1953 2 Sheets-Sheet 1 Filed April 29, 1949 fnvenior Jilike K mi'er Jfforn May 12, 1953 M. KANTER 2,637,957

BUFF'ING WHEEL Filed April 29, 1949 2 SheetsSheet 2 I Invenfar JZ [ik'e Kama? Patented May 12, 1953 'BUFFING WHEEL Mike Kanter, Passaic, N. J., assignor to United Bufi Products Corporation, Passaic, N. J., a corporation of New Jersey Application April 29, 1949, Serial No. 90,421

This invention relates to new anduseful improvements in buffing wheel constructions and with especial reference to improvements in buffing wheel constructions shown in pending application, Serial No. 768,466, filed August 13, 194E, now abandoned, entitled Air Cooled Polishing Buif in the name of Vincent Molliea, and application Serial No. 35,797, filed June 29, 1948, now Patent No. 2,519,275, entitled Pressure Cooled Polishing Buff in the name of Frank Mollica.

The object of the present invention is to provide a buffing wheel construction which is much more simplified, economical to manufacture, stronger and more efiicient in operation and one in which the cooling and ventilation of the ole vice is more effective and certain.

In brief and general terms, the invention comprises a disk-like element having divergent flanges added on its periphery, said flanges hav-' ing side walls with teeth thereon adapted to be pressed toward each other to engage an lo k with an annular shaped bufling member form of a series .of layers of fabric gathered into adjacency with the flanges of the disk, and with th teeth biting into and locking along the folded inner edge of said annulus.

Ina further particular, the invention ncludes air channels formed in the disk lilse elem n which act as inlet nd outlet passa e for h air as the element rotates, each channel has a portion disposed along a circumferential line a a radial c nnected portion extending to the flange (Jr-periphery of the disk. The channels may be formed on opposite sides of the disk-like element with the, ircumferential portions disposed in O posite directions, but preferably, with the radial portions aligned withthose on the opposite side.

Flanges are W provided with ridged portions around the openings to the channels and the curvature of the flanges is such. as to provide a circumferential recess between the channel openings. This construction will keep the inner adjacent edge of the fabric annulus spaced alon most ofits length from the surface of the flanges to provide a peripheral air passage.

These buffing Wheels are preferably manufactured in an apparatus which is disclflsed and claimed in my co-pending application, Serial No. 101,889, filed on .June .28, 1%,9 and entitled Method f and Apparatus for Formin Buffing Wheel Units.

The present preferred form which the invention may assume is illustrated in the drawings, of which:

8 Claims. (Cl. 51.193)

of the broad idea.

Fig. 1 is a side elevation of one section of a bufiing wheel which may be formed of number of such sections;

Fig. 2 is a cross section taken on the line 2-4 of Figure 1;

Fig. 3 is an enlarged partial section taken on the line 3-3 of Figure 1;

Fig. i is a similar section taken on the line te-t of Figure 1 Fig. 5 is an enlarged section showing the buiiing fabric folded and disposed on the periphery of the supporting disk before the teeth on the disk have been moved into engagement with the fabric;

Fig. 6 is a similar View showing the teeth moved into locking position with the folded portions of the fabric;

Fig. *7 isa cross section taken through the supporting disk on the line ls-ll of Figure 1;

Fig. 8 is. a, partial plan view of the periphery of the disk;

Fig. 9 is a partial section through the periphery of the disk showing the ventilating openings in the disk periphery and the annular ventilating channel therein;

Fig. 10 is a side elevation of a bufiing unit formed of several of the sections shown in the previous figures with the ventilating end plates in position; and,

Fig. 11 is a cross section taken on the line ll-.li of Figure 10.

Referring now to the specific form of the invention shown in the drawings, it is to be noted that this is one specific form embodying the general combination of novel elements which may take other specific forms Within the scope The general idea is to take a disk of metal having a central bore to be mounted on a shaft and provided with peripheral flanges against which are seated the folded portions of a series of bufling layers to which the flanges are locked by bending the edges of the peripheral flanges around against the sides of said folded portions and having teeth on the edges of said flanges which bite into the fabric to hold the material in position on the disk.

The opposite sides of the rotating disk arev provided with ventilating ducts or channels formed therein which act as inlet and outlet I channels for air which is drawn into the channels on one side and let out at the opposite side, so as to create an axial and a radial flow of air to cool the section especially the metal parts.

7 The flanges are provided with raised ridges adjacent the .clucts to keep the folded fabric slightly raised from the floor of the flanges, whereby an annular air passage is formed. Each section thus provides its own means for passage of air therethrough axially and radially and circurnferentially, and when several of these sections are mounted in adjacency on a shaft, end plates provided with similarly formed ducts, are pressed tightly against the opposite faces of the series of sections to form a bufling unit which is efficiently self ventilating in these several directions.

More specifically, the disk of each section is shown as formed from a pair of disks 2!] and 2| of circular shape preferably spot Welded or otherwise connected in close abutment, as shown in the drawings. These disks are provided with inner turned flanges 22 and 23 to permit reception of a supporting shaft 24, on which a series of sections may be fastened to form a complete bufilng unit. These disks are at their outer periphery provided with divergent flanges 25 and 2B, the free edges of which are formed with a series of teeth 27 which, in the formation of the section, are projected into the fabric from opposite sides thereof as shown in Figure 6. As shown in Figure 8, the teeth 2'! on one flange are staggered with respect to the teeth on the opposite flange.

From a careful examination of the drawings, it will be apparent that the disks 2!] and 2| are identical in structure both with respect to the teeth 21 thereon, and also with respect to the ventilating ducts or channels formed therein. These ducts are formed out of the metal of the disks by pressing the material laterally along certain lines as shown particularly in Figure 1.

As seen in this figure and the sections taken therethrough, ventilating ducts are stamped out of the metal and each comprises an air entry or exit portion 28, and a channel 29 leading therefrom to the peripheral flange of the disk from which the duct is formed. The disk metal just in front of the entry portion, is cut away as at 30. Since the disks are identical in structure, it will be apparent that when they are thus placed in abutting relation, the ducts and channels thus formed, with the disks rotating in a given direction, will act both as inlet air channels and as outlet channels. If the section shown in Figure 1, is rotating in the direction of the arrow shown therein, then the ducts shown on the near side of the device Will scoop up air and force it into the space on the disks between the surface of the flanges 22 and 23 and the adjacent folds of the fabric.

As shown in Figures 3, 4 and 9, in particular, the upper ends of the channels 29 open into the flanges 22 and 23 and the surface of the flanges at these points are slightly raised as indicated at 30, to form a raised rib. The curvature of the flanges 22 and 23 from the metal of the disks 20 and 2 I, will also naturally form a slight recess 3| in the surface of the combined flanges and this recess is annular in shape and extends between the several ribs 30, thus formed by the several ducts mentioned. When the fabric is assembled and then gathered into the spaces between the sides of the flanges as shown in Figures 5 and 6, the bottom of the folded portions is dis posed slightly above the adjacent surface of the flanges as indicated by the numeral 32. Thus in the high speed rotation of the section, air will be forced up radially through the channels 29 into the annular spaces and recesses 3i and 32, and pass annularly around the periphery of the flanges beneath the folded portions of the fabric 4 as well as being thus forced through the material of the fabric.

Considering the structure shown in Figure 1, itwill also be noted that while the ducts on the near side are scooping up air, the ducts on the opposite side are acting as outlet passages for air from the periphery of the flanges beneath the fabric and thus the air will pass from section to section axially, after having been projected up into the space beneath the fabric. We thus have a radial flow of air into the space beneath the fabric, an axial flow of air from one section to another and also a radial flow of some portion of the air up into and through the folded fabric portions.

It will be seen that when these identical disks are placed together, the ducts on each are all extending radially but in a circumferential line are faced in opposite directions as and for the purposes above mentioned. When a section is formed, it may be assembled on a shaft 24 in any suitable manner adjacent to other sections to form a complete buffing unit, as shown in Figures 10 and 11. In this assembled unit, the sections are held together by means of end plates 33 which are provided with stamped out ducts 34, arranged in a circular row and which on one side of the unit will scoop up the air and force it into the unit, and on the other end thereof, will allow the air to flow out because the ducts are disposed in the opposite directions as shown, these end plates being identical in construction. One end plate, as shown in Figure 11, abuts a shoulder 35 on shaft 24, and the other end plate is pressed into position by a nut 36 engaging a threaded end 31 of the shaft 24.

In order to slightly space the buff sections from each other, the sides of the flanges 25 and 26 are provided with stamped-out teats or projections 38 extending outwardly therefrom and when the sections are thus assembled on the shaft 24, there is provided a space between them so that air can be forced radially outward between the sections as well as within each sec-' tion as previously described. It is also to be observed in the drawings that when the disks are thus abutted, the radial portions 29 of the ducts pressed in them are aligned as shown and that the lower portions 28 thereof on one side form air inlets pointing in one direction, and on the opposite side form air outlets pointing in the opposite direction. Similarly, the scoops or ducts 34 on the end plates are directed oppositely on one plate from those on the other.

In the operation of the device, and in a manner to be set forth in another application, the folds of fabric are gathered together to lie with the folded portions disposed on the flanges 25 and 25 and between the side walls thereof, which are then pressed toward each other and the fabric so as to project the teeth 21 in locking engagement with the fabric along and adjacent the inner gathered edge. Any desired number of these sections are then disposed on a common shaft as shown, and locked in place thereon with the separate sections slightly spaced with respect to each other by means of the teats 38. As the shaft 24 rotates, the ducts on one side of each section will scoop up air and pass it radially to the space 32 between the flanges 25 and 26, and the lower folded face of the fabric. Air will also pass out of the ducts on the other side of the same section and be scooped up by the adjacent inlet ducts of the next section. Air which is forced into the space beneath the fabric at the gathered edge thereof will also'be around and tend to "pass through'the layer-sol fabric to some extent, and will set up a flow of air circumterentia lly around the rim .of the disk from one duct opening to the next. Air will also flow centrifugaliy up radially through the slight spaces formed. between the adjacent sections by reason of the teats $8.

While the invention has been described in de tail andwith respect to thepreferred form shown in the drawings, it is not to 'be limited to details and forms since many changes and modifications may be made in the -invention without departing from the spirit and scope :of the invenii-ion in itsbroade'st aspects. Hence, it is intended to cover any and all forms and modifications of the invention which may come within the language or scope of any one or more of the appended claims.

What I claim as my invention, is:

l. A buffing wheel section which comprisesa pair of disk-like elements adapted to be mounted on a rotatable shaft in face to face contact with each other, peripheral flanges on said disk like elements, toothed side walls on said flanges, an annulus of buffing fabric with a gathered inner edge formed of folded layers of material and disposed. along the inner edge in adjacent embracing relation to the flanges between the side walls thereof, the side walls of the flanges adapted to be pressed against the sides of the annulus to engage the teeth thereon with the fabric, the disk-like elements provided with air channels between the center thereof and their peripheries having a circumferential passage and a connecting radial passage opening into the space between the peripheral flanges.

2. A buffing wheel section which comprises a pair of disk-like elements adapted to be mounted in juxtaposition on a rotatale shaft, diverging peripheral flanges on each of said disk-like elements, toothed side walls on said flanges, an annulus of buffing fabric with a gathered inner edge formed of folded layers of material and disposed along the inner edge in adjacent embracing relation to the flanges between the side walls thereof, the side walls of the flanges adapted to be pressed against the sides of the annulus to engage the teeth thereon with the fabric, the disk-like elements provided with air channels. having a circumferential passage and a connecting radial passage opening into the flanges, raised ridges on the flange formed around the openings of the channels thereinto to space and, adjacent folded portions of the fabric from the surface of the flange.

3. A buffing wheel section comprising a pair of disk-like elements connected in abutting relation, flanges on the periphery of the elements at right angles to the plane of the elements, toothed side walls on the flanges, an annulus of fabric formed of folded layers of material with their folded portions disposed in gathered c0 ndition adjacent the surface of the flanges and adapted to be held in position by the teeth of the side walls pressed thereinto, the elements formed with air channels formed from the material of the elements, said channels having radial portions which are aligned with similar channels on the other element, and provided with circumferential connecting channels which extend circumferentially in each element in a direction opposite to the similar channels in the other element.

4. A bufling wheel section comprising a pair of disk-like elements connected in abutting :rela tion, flanges on the "periphery of thcielements at right angles to the plane of the elements, toothed side walls on the flanges, an annulus of .fabric formed of folded layers of material with their folded portions disposed in gathered condition adjacent the surface of the flanges and adapted to be held in position by the teeth of the side walls pressed thereinto, the elements formed air channels formed from :the material :of :the elements, said channels having radial portions which are aligned with similar channels on'th'e other element, and provided with circumferens tial connecting channels which extend circumferent-ially in each element in a direction appposite to the similar channels in the other element, raised ridges on the flanges formed around the openings of the channels thereinto to space the adjacent folded portions .of the fabric from the surface of the flange.

5. A bufling wheel section which comprises a pair of disk-like elements in juxtaposition having peripheral flange portions extending diver-gently therefrom, toothed side walls on said flange portionswith the teeth adapted to be-pressed toward each other, a plurality of teats on the outer face of the side walls to space the section from adjacent sections, said element having an air chan nel having a circumferential passage and a connecting radial passage extending to the periphery of the element, said channel being located abetween the disk-like elements.

6. A buffing wheel section comprising two disks arranged concentrically and in face to face contact with each other, each disk being provided with a hole at the center adapted to receive a supporting shaft, and with other holes therethrough between the center hole and the periphery of the disk, each disk being provided at the periphery thereof with an annular flange extending laterally from the disk and being secured to the disk along one edge of the flange, a second annular flange for each disk in a plane offset from the plane of the disk and secured to the first mentioned flange along the free edge of the first mentioned flange, whereby a channel about the periphery of the two disks is formed between the two second mentioned flanges, the disks being constructed and arranged to provide unobstructed spaces for the free passage of air from the holes located between the center of the disks and the periphery to the channel surrounding the periphery of the disks, an annulus of huffing material comprising a plurality of plies of fabric surrounding the disks and having its inner edge positioned in the channel and spaced from the bottom of the channel, and a plurality of teeth attached to the free edge of each of the second mentioned flanges and projecting into the annulus of bufling material to secure the edge of the annulus in the channel.

7. A buffing wheel section comprising at least one disk member and a cooperating member having a peripheral rim engaging the inner face of said disk member, said disk member being provided with a hole at the center adapted to receive a supporting shaft and with other holes therethrough between the center hole and the periphery of the disk, each of said member belug provided at the periphery thereof with an annular flange extending laterally from said member and being secured to the member along one edge of the flange, a second annular flange in the plane offset from the plane of the member and secured to the first mentioned flange along the free edge of the first mentioned flange whereby a channel about the periphery of the two members is formed between the second mentioned flanges, the members being constructed and arranged to provide unobstructed spaces for the free passage of air from the holes located between the center of the disk and the periphery to the channel surrounding the periphery of the members, an annulus of buiflng material comprising a plurality of plies of fabric surrounding the members and having its inner edge positioned in the channel and spaced from the bottom of the channel, and a plurality of teeth attached to the free edge of each of the second mentioned flanges and projecting into the annulu of the buffing material to secure the edge of the annulus in the channel.

8. A buifing wheel section comprising at least one disk member and a cooperating member having a peripheral rim engaging the inner face of said disk member adjacent the rim thereof, said disk member being provided with a hole at the center adapted to receive a supporting shaft and with other holes therethrough between the center hole and the periphery of the disk, each of said members being provided at the periphery thereof with an annular flange extending laterally from said member and being secured to the member along one edge of the flange, a second annular flange in the plane offset from the plane of the member and secured to the first mentioned flange along the free edge of the first mentioned flange whereby a channel about the periphery of the two members is formed between the second mentioned flanges, the members being constructed and arranged to provide unobstructed spaces for the free passage of air from the holes located between the center of the disk and the periphery to the channel surrounding the periphery of the members, an annulus of bufllng material comprising'a plurality of plies of fabric surrounding the members and having its inner edge positioned in the channel and spaced from the bottom of the'channel, and a plurality of teeth attached to the free edge of each of the second mentioned flanges and projecting into the annulus of the bufling material to secure the edge of the annulus in the channel.

MIKE KANTER.

References Cited in the file of this patent UNITED STATES PATENTS Number 

